A great, informative review.
Headphone Reviews and Discussion - Head-Fi.org
reddog
sennsay
An excellent and very thorough review! I have the QP1R and find it makes a stunning source via optical out to a Schiit Modi Multibit and Magni 3 to Sennheiser HD540 Reference headphones. That ultra silent background is fabulous. I use the HifiMAN HE400S with Focus A pads for the player as a portable. One of the finest bits of kit I've ever bought in 40+ years!
goodvibes
You may also like the QP1r just as much. They are different and it becomes a preference thing. What it lacks in balanced smoothness it makes up for in PRAT. Great pair of devices. If you ever try one contact me and I'll send you an old FW to try along with the latest. Different flavors of awesome.
NiVrA
How does this fair against the ibasso DX200?
Watermelon Boi
@NiVrA Nice timing, I've just got my DX200 last week 
Though the default Amp1 on DX200 is known to fall way behind than the recent Amp6 or Amp7, I'd call it unfair to compare these two players at the moment. (auditioned DX200 with a recently released amp and was far better than the current Amp1 setup) Though at the moment I could say QP2R sounds more neutral while DX200 sounds more energetic and vibrant. QP2R is one of the most purest sounding player for sure.
Though the default Amp1 on DX200 is known to fall way behind than the recent Amp6 or Amp7, I'd call it unfair to compare these two players at the moment. (auditioned DX200 with a recently released amp and was far better than the current Amp1 setup) Though at the moment I could say QP2R sounds more neutral while DX200 sounds more energetic and vibrant. QP2R is one of the most purest sounding player for sure.